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Bosch electric single oven (hbn 4305)

Light, main fan, both oven & grill not working. top fan and clock display work

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Re: bosch electric single oven (hbn 4305)

Hi there have you cheked that your timer is not set to auto function

Posted on Dec 09, 2007

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I have a bosch double oven and the main oven fan element has failed. Do I have to remove th eoven to get access to replace it

It should not be neccessary to remove from cabinet.
Remove cover at rear of oven and you should be able to change the elemnt from inside.

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My Bosch double oven timer is not working. No clock, notimer, but the oven is working fine.

Sure this is the failure off the unit but make sure that the step down transformer for the power to the unit is faulty or burnt. If so replace the transformer. If power goes tto unit without display then the processor can be faulty . Change the clock timer. unit if you need the timings.

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I purchased a microwave/convect oven combo last week. Installed today, everything works fine except that the lower oven won't heat. I tried turning the breakers off waiting a few minutes and back on. ...

Ensure that the clock is set and that is not in auto mode, the clock is only linked to the main oven and therefore it will not opearte if the clock is not set correctly, all the best

Sep 04, 2010 | Bosch HBN 9722 GB Electric Double Oven

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Bulb blown and now fan is not working


When you changed the bulb did you turn the power off at the mains if so then you need to reset the clock on the front panel the fan will not work but all other functions will look in book it will tell you clock reset.Hope I helped.
Good Luck.

May 07, 2010 | Bosch HBN 730520B / 730560B Electric...

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I have A Bosch HBN32 oven which has just stopped working all the timers are switched off and the grill still works but the oven only heats up to about 80c the fan still works. any help would be greatly...

ck wiring ( tec sheet inside the panel - there on most bosch a one time thermo / or it may be a resetable one .but you will have to reset it by pushing the red button . this may correct problem . if it does it again look for a over heating porblem like the ( fan foing too slow. ) or temps prob problems. .. mm / hope this helps / feed back pls /

Dec 20, 2009 | Bosch HBN 3550 Electric Single Oven

1 Answer

Bosch oven not heating to temp

Dear customer,
i recommend u to try the following routine to sort out this problem
  • Check timer and clock settings
  • Reseat the element
  • Test the element
  • Test the element connectors
  • Test the oven temperature control
  • Test the oven selector control
  • Recalibrate the temperature control

  • hope u find this useful. thank you.

    Jul 08, 2008 | Ovens

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    Bosch oven HBT346 - how do I reset the clock?

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    Apr 15, 2008 | Bosch HBN 442 / HBN446 Electric Single...

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    hi there sounds like fan oven element at back, don't worry about smoke from grill is more than likley just grease burnning off element, just leave on for a min or two

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    Oven will not heat?

    you have the oven on automatic in error. switch off at mains. leave for 5 mins. turn on, consult your handbook on how to set clock and having done this, bet it works

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    Fan oven not heating, bosch hbn 202t

    the fan oven element is separate from the grill element. the problem is that the circular element round the fan is blown. remove the back panel of the oven and you will see the element. replacement is easy. on most bosch, the element is removable from inside the oven but for some you have to remove the oven and take off the back casing

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